1 files changed, 2 insertions, 2 deletions
diff --git a/src/stream/arc4/arc4.cpp b/src/stream/arc4/arc4.cpp
index a3a2f9a65..90f0f0904 100644
--- a/src/stream/arc4/arc4.cpp
+++ b/src/stream/arc4/arc4.cpp
@@ -18,13 +18,13 @@ void ARC4::cipher(const byte in[], byte out[], u32bit length)
    {
    while(length >= buffer.size() - position)
       {
-      xor_buf(out, in, buffer.begin() + position, buffer.size() - position);
+      xor_buf(out, in, &buffer[position], buffer.size() - position);
       length -= (buffer.size() - position);
       in += (buffer.size() - position);
       out += (buffer.size() - position);
       generate();
       }
-   xor_buf(out, in, buffer.begin() + position, length);
+   xor_buf(out, in, &buffer[position], length);
    position += length;
    }